B1840 2017 Chevrolet Silverado Code - Driver Seat Lumbar Up Switch Circuit
Quick Answer
The Seat Memory Control Module supplies a reference voltage to each signal circuit of the Driver Seat Adjuster Switch. Common causes include Faulty Driver Seat Adjuster Switch, Driver Seat Adjuster Switch harness is open or shorted, Driver Seat Adjuster Switch circuit poor electrical connection. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
- What it means
- B1840 2017 Chevrolet Silverado indicates Driver Seat Lumbar Up Switch Circuit.
- Common causes
- Common causes include Faulty Driver Seat Adjuster Switch, Driver Seat Adjuster Switch harness is open or shorted, Driver Seat Adjuster Switch circuit poor electrical connection.
- Severity
- High - diagnose this code as soon as possible.
- Can I drive?
- Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
Code B1840 2017 Chevrolet Silverado Description
What are the Possible Causes of the DTC B1840 2017 Chevrolet Silverado?
- Faulty Driver Seat Adjuster Switch
- Driver Seat Adjuster Switch harness is open or shorted
- Driver Seat Adjuster Switch circuit poor electrical connection
- Faulty Seat Memory Control Module
How to Fix the DTC B1840 2017 Chevrolet Silverado?
Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.
What is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the B1840 2017 Chevrolet Silverado code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.
Need more information about the B1840 2017 Chevrolet Silverado code?
Need more information on how to fix the B1840 2017 Chevrolet Silverado code? Get Access to Factory Service Manuals
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Frequently Asked Questions about B1840 2017 Chevrolet Silverado Code
1. What are the common symptoms of OBDII code B1840 in a 2017 Chevrolet Silverado?
The common symptoms include inoperative driver seat lumbar up switch, erratic seat movement, or total loss of control over the lumbar support.
2. What are the possible causes of OBDII code B1840 in a 2017 Chevrolet Silverado?
Possible causes include a faulty driver seat lumbar up switch, damaged wiring or connectors in the circuit, or a malfunctioning seat control module.
3. How can I diagnose the issue related to OBDII code B1840 in my 2017 Chevrolet Silverado?
You can diagnose the problem by checking the wiring and connectors for any visible damage, testing the driver seat lumbar up switch for continuity, and using a scan tool to communicate with the seat control module for fault codes.
4. Is it safe to continue driving with OBDII code B1840 present in a 2017 Chevrolet Silverado?
It is generally safe to continue driving, but you may experience discomfort due to the loss of lumbar support adjustment. It is recommended to address the issue promptly to ensure driving comfort.
5. Can I repair OBDII code B1840 in a 2017 Chevrolet Silverado myself?
If you have experience with automotive electrical systems and access to the necessary tools, you may be able to repair the issue yourself by replacing the faulty lumbar up switch or repairing damaged wiring. However, professional assistance is recommended for accurate diagnosis and repair.
6. How much does it typically cost to fix OBDII code B1840 in a 2017 Chevrolet Silverado?
The cost of fixing OBDII code B1840 can vary depending on the exact cause of the issue. Repair costs may range from a few hundred to a thousand dollars, including parts and labor.
7. Can resetting the OBDII system clear the B1840 code in a 2017 Chevrolet Silverado?
Resetting the OBDII system may temporarily clear the code, but if the underlying issue is not addressed, the code is likely to return. It is important to diagnose and repair the root cause of the problem to prevent code recurrence.
8. Will OBDII code B1840 affect the overall performance of my 2017 Chevrolet Silverado?
OBDII code B1840 is related specifically to the driver seat lumbar up switch circuit and should not affect the overall performance of the vehicle. However, it can impact the comfort and convenience of adjusting the lumbar support.
9. How long does it typically take to repair OBDII code B1840 in a 2017 Chevrolet Silverado?
The repair time can vary depending on the exact cause of the issue and the complexity of the repair. In general, it may take a few hours to a full day to diagnose and fix the problem.
10. Is there a recall or technical service bulletin related to OBDII code B1840 in the 2017 Chevrolet Silverado?
It is recommended to check with a Chevrolet dealership or refer to the National Highway Traffic Safety Administration (NHTSA) website to determine if there are any recalls or technical service bulletins related to OBDII code B1840 in the 2017 Chevrolet Silverado.
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